Monica bought some postage stamps she uses 10 stamps on letters and 5 and on postcards then her grandmother gives her 20 more stamps. She now has 35 stamps left how many stamps did Monica originally have?

35-20+10+5=30 so she began with 30 stamps

Monica bought some postage stamps.

10 stamps on letters

5 and on postcards

Her grandmother gives her 20 more stamps

She now has 35 stamps left.

How many stamps did Monica originally have?

lets solve this:-

35 - 20 + 5 + 10 = 30

Monica had 30 stamps to began with!